close all;
countTrue = csvread('gain-per-question-full.csv');
counts = [];
stds = [];
used = [];
for i = 1:size(countTrue,2)
    indices = countTrue(:,i) ~= -1;
    counts = [counts mean(countTrue(indices,i))];
    stds = [stds std(countTrue(indices,i))];
    used = [used sum(indices)];

end
figure, bar(counts), title('mean');
figure, bar(stds), title('std');
figure, bar(used), title('times used');
